论文部分内容阅读
金属富勒烯Gd@C82在Cu(111)表面上的成核及电学性质
【机 构】
:
中国科学院武汉物理与数学研究所,湖北,430071;中国科学院大学,北京,100049 中国科学院
【出 处】
:
中国物理学会2012年秋季学术会议
【发表日期】
:
2012年9期
其他文献
众所周知,一束光在电介质界面全反射时,会相对于入射位置有侧向移动.这一现象被称为Goos-H nchen (GH) 位移 [1].在局域应力或磁场存在的情况下,谷或自旋依赖的GH 位移被提议用作实现电子束的谷 [2] 或自旋 [3] 分离.我们注意到,要有效地实现这些分离器,不同谷或自旋的GH 位移的差值应该比电子束的纵向宽度大.在石墨烯单势垒结构中,如果不合适地选择结构参数,这一条件不能被满足.
通过隧穿势垒,磁性金属可在无磁场及室温条件下实现对半导体的自旋极化电子注入,从而实现半导体对电子自旋的可控.因此,磁性金属-半导体异质结相关性质的研究已成为半导体领域的研究热点.鉴于IV-VI族半导体在提高自旋注入效率上具有潜在的优势,本课题组选取了典型磁性过渡族金属Mn,对其在PbTe(111)表面上的生长行为用扫描隧道显微镜(STM)和光电子能谱进行了系统研究,并辅以了第一性原理的理论计算.
English Title (Graphene on incommensurate substrates: Trigonal warping and emerging Dirac cone repli
Abstract text.(The adhesion of graphene on slightly lattice-mismatched surfaces,for instance,of hexagonal boron nitride (hBN) or Ir(111),gives rise to a complex landscape of sublattice symmetry-breaki
采用熔体快淬或高能球磨的方法制备的SmCo5纳米晶永磁材料具有高矫顽力和高居里温度[1],具有潜在的应用价值.但这类材料是磁各向同性的,磁能积较低,在很大程度上限制了实际应用.对此,我们采用放电等离子热变形技术研制了各向异性SmCo5纳米晶磁体[2],本文对这种新型磁体的结构和磁性能进行了表征.
Magnetocrystalline anisotropy and its contributions to permeability of Y2Fe17-xCox (x=6, 8, 10) comp
Since the serious electromagnetic interference due to the widespread application of information technology and wireless communications,there is an increasing demand for the development of novel and ef
会议
Investigation of Magnetic Properties of Hard (CoFe2O4)-Soft (Fe3O4) Ceramics synthesized by SPS Tech
In recent years,considerable attention has been paid to the soft and hard magnetic nano-composite systems due to their charming application foreground on improvement in the magnetic properties.For the
Metal-organic frameworks (MOFs) may exhibit a variety of interesting physical and chemical properties.Here we demonstrate the magnetoelectric (ME) coupling in a metal-organic framework [(CH3)2NH2]Mn(H
会议
Combining the highly spatial-resolved topographic imaging with the optical excitation and spectral analysis,photo-assisted STM has provided a unique tool to study optically excited vibration and elect
The tip expansion due to laser illumination is an important issue for the development of laser-assisted scanning tunneling microscope (STM).In this letter,the thermal expansion of an STM tip induced b